Portable water quality tester



FIG. 1 is a perspective view of a portable water quality tester showingmy new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof, the right side being amirror image thereto;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof.

The ornamental design for a portable water quality tester, as shown anddescribed.